Okay, chrono'd some of the HST +P 230gr from my XD(M) .45 I bought today. Has a 3.8" barrel, so roughly the same as the Glock 30/36.
Not too shabby. They all broke 900fps. Granted, it's a spunky round I wouldn't want to shoot all day but I do believe that it'd be more than sufficient for social encounters.
Supposedly the XD(M) has a match barrel, so maybe it's a little tighter (?) and therefore better velocities. I dunno.